我不知道这是否值得提问。我已经阅读了文档，但是来自旧的 PHP $_SESSION 环境我不确定如何实现。我有一个测验类型的应用程序。在测验开始时，我想获取测验中的所有问题并将它们存储在会话中。在检索下一个问题时，我想检查会话中是否存在这些问题，如果存在，那么我会检索下一个问题。我有以下内容：
public function nextQuestionAction()
{
$data = $this->getRequest()->request->all();
$session = new Session();
$session->start();
if ($session->has('quiz_questions'))
{
$session->get('quiz_questions');
// Get the next question from the session,
// based on the previous question's ID, $data['question_id'];
// The questions are ordered by an order_index and not by id, but
// I get the session index based on $data['question_id'] and then
// retrieve the next one in line based on the index, or something
// along that line
// If there is no next question, then the session must be unset
}
else
{
$session->create('quiz_questions');
$quiz = $this->getDoctrine()
->getRepository('CriticalReadingQuizBundle:Quiz')
->find($data['quiz_id']);
$questions = $quiz->getQuestions();
// Store questions in session in such a way that I can retrieve
//the next question when this function gets called again.
//The questions are ordered by an order_index and not by id, but they can
//be stored in the session in their order with some arbitrary index so that
//the next in line can be retrieved based on the index of the previous.
}
... // Rest of code returns the fetched question to the front-end.
// If this is the first time that the function is called, the first question is returned.
//If there are no questions left (previous fetch fetched the last question), return null.
}
如果有人可以帮助我编写在 Symfony2 中使用会话的代码，因为这是我第一次使用它们。如果需要，我可以发布测验和问题实体，但我认为没有必要。